MajorWiki/04-streaming/obs/obs-studio-setup-encoding.md

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title	domain	category	tags	status	created	updated
OBS Studio Setup and Encoding Settings	streaming	obs	obs streaming encoding twitch youtube linux	published	2026-03-08	2026-03-08

OBS Studio Setup and Encoding Settings

OBS Studio is the standard for streaming and recording — open source, cross-platform, and capable of everything you'd need for a production setup. The defaults are fine to get started but getting encoding settings right matters for stream quality and CPU/GPU load.

Installation

Linux:

# Fedora
sudo dnf install obs-studio

# Ubuntu/Debian (flatpak recommended for latest version)
flatpak install flathub com.obsproject.Studio

# Ubuntu PPA (if you want apt)
sudo add-apt-repository ppa:obsproject/obs-studio
sudo apt update && sudo apt install obs-studio

Windows/macOS: Download from obsproject.com.

Encoding Settings

The most important settings are in Settings → Output → Streaming.

If you have an NVIDIA GPU (recommended):

Setting	Value
Encoder	NVENC H.264 (or AV1 if streaming to YouTube)
Rate Control	CBR
Bitrate	6000 Kbps (Twitch max), up to 20000+ for YouTube
Keyframe Interval	2
Preset	Quality
Profile	high
Look-ahead	Enable
Psycho Visual Tuning	Enable
GPU	0
Max B-frames	2

If using CPU (x264):

Setting	Value
Encoder	x264
Rate Control	CBR
Bitrate	6000 Kbps
Keyframe Interval	2
CPU Usage Preset	veryfast or superfast
Profile	high
Tune	zerolatency

NVENC offloads encoding to the GPU, leaving CPU free for the game/application. Use it whenever available. x264 on veryfast is a reasonable CPU fallback if your GPU doesn't support hardware encoding.

Output Resolution and FPS

Settings → Video:

Setting	Value
Base (Canvas) Resolution	Match your monitor (e.g., 1920×1080)
Output (Scaled) Resolution	1920×1080 (or 1280×720 for lower bitrate streams)
Downscale Filter	Lanczos (best quality) or Bilinear (fastest)
Common FPS	60 (or 30 if bandwidth-limited)

For most Twitch streams: 1080p60 or 720p60 at 6000 Kbps. 1080p60 at 6000 Kbps is pushing it for fast-motion content — if you're seeing compression artifacts, drop to 720p60.

Scene Setup

A basic streaming setup uses two scenes at minimum:

Live scene — your main content:

• Game Capture or Window Capture (Windows/macOS) or Screen Capture (Linux/Wayland)
• Browser Source for alerts/overlays
• Audio input (mic)
• Desktop audio

BRB/Starting Soon scene — a static image or video loop for transitions.

Add sources with the + button in the Sources panel. Order matters — sources higher in the list appear on top.

Audio Setup

Settings → Audio:

• Desktop Audio: set to your main audio output
• Mic/Auxiliary Audio: set to your microphone

In the mixer, use the gear icon per source to apply filters:

• Noise Suppression (RNNoise): reduces background noise significantly
• Noise Gate: cuts audio below a threshold — stops background hiss when you're not talking
• Compressor: evens out volume levels
• Gain: boosts a quiet mic

Apply them in that order. Noise suppression first, gate second, compressor third.

Linux-Specific Notes

Wayland capture: OBS on Wayland requires either the PipeWire screen capture plugin or using X11 compatibility mode (obs --use-x11 or setting the env var QT_QPA_PLATFORM=xcb). The Flatpak version handles this better than the native package on some distros.

Virtual camera on Linux:

# Load the v4l2loopback kernel module
sudo modprobe v4l2loopback devices=1 video_nr=10 card_label="OBS Virtual Camera" exclusive_caps=1

# Make it persist across reboots
echo "v4l2loopback" | sudo tee /etc/modules-load.d/v4l2loopback.conf
echo "options v4l2loopback devices=1 video_nr=10 card_label=OBS Virtual Camera exclusive_caps=1" | sudo tee /etc/modprobe.d/v4l2loopback.conf

Plugins & Capture Sources

Captions Plugin (Accessibility)

OBS Captions Plugin adds real-time closed captions to streams using speech-to-text. Viewers can toggle captions on/off in their player — important for accessibility and for viewers watching without sound.

Install from the plugin's GitHub releases page, then configure in Tools → Captions.

VLC Video Source (Capture Card)

For capturing from an Elgato 4K60 Pro MK.2 (or similar DirectShow capture card) via VLC as an OBS source, use this device string:

:dshow-vdev=Game Capture 4K60 Pro MK.2
:dshow-adev=Game Capture 4K60 Pro MK.2 Audio (Game Capture 4K60 Pro MK.2)
:dshow-aspect-ratio=16:9
:dshow-chroma=YUY2
:dshow-fps=0
:no-dshow-config
:no-dshow-tuner
:live-caching=0

Set live-caching=0 to minimize capture latency. This is useful when OBS's native Game Capture isn't an option (e.g., capturing a separate machine's output through the card).

Gotchas & Notes

• Test your stream before going live. Record a short clip and watch it back. Artifacts in the recording will be worse in the stream.
• Keyframe interval at 2 is required by Twitch. Other values cause issues with their ingest servers.
• High CPU Usage Preset for x264 makes streams look better but uses more CPU. veryfast is usually the sweet spot — fast and medium are noticeably heavier for marginal quality gain.
• NVENC quality has improved significantly. Old advice says x264 is better quality. That was true in 2018. Current NVENC (RTX series) is competitive with x264 at reasonable bitrates.
• OBS logs are in Help → Log Files. When something isn't working, this is where to look first.

See Also

• linux-file-permissions
• bash-scripting-patterns